rpcrdma_buffer_destroy(9)

💅 rpcrdma_buffer_destroy(9) 💅

okay so this is a page from the Kernel API Manual bestie, and it's all about rpcrdma_buffer_destroy — the lil cleanup queen that releases all your hw resources. she's giving janitor energy and honestly? iconic. 🧹✨

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✨ NAME ✨

rpcrdma_buffer_destroy — release all hw resources 🫶

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🌸 SYNOPSIS 🌸

void rpcrdma_buffer_destroy (struct rpcrdma_buffer *buf );

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🎀 ARGUMENTS 🎀

• buf — the root control block for resources. yeah she's the main character here, everything hangs off her 💅

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🦋 DESCRIPTION 🦋

ok so ORDERING is the whole vibe here — this function literally relies on a prior rpcrdma_xprt_drain and will not function without it, no cap. 😭

Here's what that prior drain guarantees:

• No more Send or Receive completions can occur 💀
• All MRs, reps, and reqs are returned to their free lists 🔥

like, everybody's home and the door is locked before she starts tidying. periodt.

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🌈 SEE ALSO 🌈

Kernel file ./net/sunrpc/xprtrdma/verbs.c, plus the whole friend group:

• rpcrdma_flush_disconnect(9)
• rpcrdma_wc_send(9)
• rpcrdma_wc_receive(9)
• rpcrdma_cm_event_handler(9)
• rpcrdma_xprt_connect(9)
• rpcrdma_xprt_disconnect(9)
• rpcrdma_sendctx_get_locked(9)
• rpcrdma_sendctx_unget_locked(9)
• rpcrdma_sendctx_put_locked(9)
• rpcrdma_mrs_refresh(9)
• rpcrdma_req_create(9)
• rpcrdma_req_setup(9)
• rpcrdma_rep_put(9)
• rpcrdma_buffer_create(9)
• rpcrdma_req_destroy(9)
• rpcrdma_mrs_destroy(9)
• rpcrdma_mr_get(9)
• rpcrdma_reply_put(9)
• rpcrdma_buffer_get(9)
• rpcrdma_buffer_put(9)
• rpcrdma_regbuf_realloc(9)
• __rpcrdma_regbuf_dma_map(9)
• rpcrdma_post_recvs(9)

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and that's the whole page bestie!! sourced from ./net/sunrpc/xprtrdma, dated October 2026, one version, one vibe 🍓💜 go forth and free your hw resources responsibly 🧚‍♀️⭐